USBR 2013 Operations for Western Montana Reservoirs presentation at the 2013 Clark Fork River Basin Task Force meeting.

1. 2013 Operations for Western
Montana Projects

2. Hungry Horse Reservoir

3. • May Final Runoff Forecast for Hungry
Horse inflow is 1665 kaf (May-Jul) which is
106% of average.
• Hungry Horse reduced discharges May 13
– May 15 for local flood control operations.
• Peak inflow so far this year was 33,500 cfs
(average daily) on May 14.

5. 0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
3510.00
3520.00
3530.00
3540.00
3550.00
3560.00
3570.00
1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep
Discharge(cfs)
ReservoirElevation(ft)
Hungry Horse Operations (WY 2013)
2013 Forebay (ft) 2012 Forebay (ft) Sep 30 target 2013 Discharge(cfs)
Discharge decrease
for local floodcontrol

6. Lake Como

7. • NWRFC latest forecast (5/22) for the
Bitterroot River near Darby is 67% of
average

9. 4180.00
4190.00
4200.00
4210.00
4220.00
4230.00
4240.00
4250.00
1-Oct 31-Oct 30-Nov 30-Dec 29-Jan 28-Feb 30-Mar 29-Apr 29-May 28-Jun 28-Jul 27-Aug 26-Sep
ReservoirElevation(ft)
Como Operations (WY 2013)
2010 Forebay (ft) 2011 Forebay (ft) 2012 Forebay (ft) 2013 Forebay (ft)

10. Summary
• Average snowpack and average water supply
volume for Hungry Horse. Below average water
supply volume for Como
• Both Hungry Horse and Como expected to refill
in June
• Hungry Horse will continue to help provide local
flood control protection while there is still space
in reservoir to do so.